Wednesday, September 8, 2021

CVE-2021-32802

Description

Nextcloud server is an open source, self hosted personal cloud. Nextcloud supports rendering image previews for user provided file content. For some image types, the Nextcloud server was invoking a third-party library that wasn't suited for untrusted user-supplied content. There are several security concerns with passing user-generated content to this library, such as Server-Side-Request-Forgery, file disclosure or potentially executing code on the system. The risk depends on your system configuration and the installed library version. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. These versions do not use this library anymore. As a workaround users may disable previews by setting `enable_previews` to `false` in `config.php`.

References to Advisories, Solutions, and Tools


References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace.
We have provided these links to other web sites because they
may have information that would be of interest to you. No
inferences should be drawn on account of other sites being
referenced, or not, from this page. There may be other web
sites that are more appropriate for your purpose. NIST does
not necessarily endorse the views expressed, or concur with
the facts presented on these sites. Further, NIST does not
endorse any commercial products that may be mentioned on
these sites. Please address comments about this page to [email protected]
Resourcehttps://docs.nextcloud.com/server/21/admin_manual/configuration_files/previews_configuration.html#disabling-previewshttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-m682-v4g9-wrq7https://hackerone.com/reports/1261413
 

Copyright © 2020 Cyber Details - Vulnerability Database™

Thanks for everything Templateism - You should have written the code a little more complicated